package lab02.test36;

//本科生
public class Undergraduate extends Student {
    @Override
    String calGrade() {

        String grade="";
        double avg=average();

        if(avg>=80&&avg<=100)
            grade="优秀";
        else if(avg>=70&&avg<80)
            grade="良好";
        else if(avg>=60&&avg<70)
            grade="一般";
        else if(avg>=50&&avg<60)
            grade="及格";
        else
            grade="不及格";
        return grade;
    }
}
